Fecha de publicación: 26/02/2021 Fuente: Wipo "BigData" The utility model discloses a smart city big data acquisition system comprising a system cabinet body, a sucker, a hand wheel and a guide block, the bottom surface of the system cabinet body is fixedly provided with a supporting block and the sucker respectively, the top surface of the sucker is penetrated by a piston, the lower surface of the piston is fixedly connected with a first reset spring,and the lower surface of the piston is fixedly connected with a second reset spring. And the bottom end of the first reset spring is fixedly arranged on the top surface of the suction cup, and a handwheel penetrates through the rear surface of the system cabinet body. According to the smart city big data acquisition system, when the system needs to be fixed to a certain position, a first bevel gear can be engaged with a second bevel gear by rotating a hand wheel, a transmission gear is driven by the second bevel gear to rotate to be engaged with a driven gear, and the driven gear is engagedwith a screw rod to drive the screw rod to drive a pulley to slide upwards; therefore, under the action of gravity, the suckers can be adsorbed to the ground and are supported through the supporting blocks to be prevented from being turned over, and the fixing effect is achieved.